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Why does my 2017 Kia Sorento randomly lose power?

Asked by Richard

Twice over the last 4 months the 2.2l diesel engine in my 2017 Kia Sorento has randomly lost power under acceleration from stationary to about 25km/h and has gone into limp mode. The first time, in September 2020, I stopped the vehicle, turned off the ignition, then restarted engine and the problem was (temporarily) resolved. The second time, in December, the problem repeated and was resolved in same manner. No engine warning light illuminated on either occasion. My mechanic conducted an electronic diagnostic test but could not detect any fault. The car has done almost 20,000km. What could be happening here?

Answered by CarsGuide

19 Jan 2021 David Morley

It sounds like something electronic is randomly playing up and that’s causing the intermittent problem. Modern engines like these use a raft of sensors to keep the on-board computer informed of what’s going on and keep everything running smoothly and efficiently. If just one of those sensors stops working properly, all sorts of havoc can result.

It’s a bit strange that the on-board diagnostics of the vehicle aren’t throwing up a relevant fault code when your mechanic interrogates the computer but, again, some of these modern electronic systems require some pretty specific software. Which means a trip to a Kia dealership might provide a more in-depth answer to what’s going on.

The good news is that since 2014, Kias sold new in Australia have been covered by a seven-year warranty, so your Sorento is well and truly still under that factory cover. Which means it shouldn’t cost you anything to have the problem sorted out by Kia.

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